Bombing circles

[stevie02sky.com]

Watched a tutorial on YouTube. Dropping iron bombs on bombing circles. Are these available in the main game or as a mod ?

[Harry.R]

If it's a mod it's probably:

 

[G.J.S]

Yep, 476th package. Some good strafe targets too. TBH this is a mod that is essential, especially if you have NTTR.